How we worked it out
Updated as you change the numbers.
- Convert everything to seconds, add or subtract, then convert back to days, hours, minutes and seconds.
Method and assumptions
Time spans are converted to seconds so they can be added and subtracted exactly, then shown in days, hours, minutes and seconds. Adding to a clock time wraps past midnight and says how many days it moved.
Questions
What is 2 h 45 min + 1 h 50 min?
4 h 35 min, or 4.5833 hours.
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.